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Finding the Fourth Proportional to 653,409.03, 980,110.81 and 254,328.11

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Solution

The fourth proportional to 653,409.03, 980,110.81 and 254,328.11 is: 381,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,409.03 : 980,110.81 = 254,328.11 : x
  2. Step 2: Convert to fraction form
    653,409.03/980,110.81 = 254,328.11/x
  3. Step 3: Cross multiply
    653,409.03x = 980,110.81 × 254,328.11
  4. Step 4: Simplify right side
    653,409.03x = 249,269,729,897.87
  5. Step 5: Solve for x
    x = 249,269,729,897.87/653,409.03
  6. Step 6: Final answer
    x = 381,491.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.